CVE-2026-33007

MEDIUM 5.3

Apache HTTP Server: mod_authn_socache crash

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration. Users are recommended to upgrade to version 2.4.67, which fixes this issue.

CWE	CWE-476
Vendor	apache software foundation
Product	apache http server
Published	May 4, 2026
Last Updated	May 4, 2026

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Affected Versions

Apache Software Foundation / Apache HTTP Server

2.4.0 ≤ 2.4.66

References

NVD ↗ CVE.org ↗ EPSS Data ↗

httpd.apache.org: https://httpd.apache.org/security/vulnerabilities_24.html openwall.com: http://www.openwall.com/lists/oss-security/2026/05/04/22

Credits

Pavel Kohout, Aisle Research, Aisle.com